What is a mail server 1

E-mail account settings for a 1 & 1 e-mail address

You can use your 1 & 1 e-mail address with any e-mail program that supports the SMTP, POP3 and IMAP protocols.

Many e-mail programs have a wizard that makes it easy for you to set up your e-mail address. You only need your e-mail address, your password and the information about the mail server.

If you don't have a 1 & 1 email address yet, you can simply create any email address in your 1 & 1 Control Center. You can find out how to do this in the article: Setting up an email address in the 1 & 1 Control Center

Account settings for a 1 & 1 email address
User and login information:
  • User name: The username corresponds to your email address.
  • password: You set the password in the 1 & 1 Control Center.
  • Account type: Choose between IMAP or POP. We recommend IMAP.
  • Connection security: Activate SSL encryption for secure transmission.
Incoming mail serverimap.1und1.depop.1und1.de
Port for SSL993995
(Alternatively: TLS / STARTTLS)(143)(110)
Outgoing mail server (SMTP)smtp.1und1.desmtp.1und1.de
Port for SSL465465
TLS / STARTTLS587 (alternatively 25)587 (alternatively 25)
Activate for the outgoing mail server (SMTP) SMTP authentication.

You will find more information on this topic here: